A long time from now, Ireland and the UK will be just beneath the Tropic of Cancer, hugging the coastline of Africa. Japan will be on the Equator and the Arctic Ocean will be the largest ocean in the world. A large shard of Africa (the area east of the Rift Valley) will have split off and hit western India, and a two-thousand mile gulf will separate North America from South America. Only two major continents will exist: North America / Greenland and a supercontinent comprising Europe, Asia, Africa, South America, Antarctica and Australasia.
This is what the world will look like in 120 million years time, according to the German Research Centre for Geosciences.
Continents have always been on the move. During the Carboniferous Period (around 300 million years ago), most of Europe and eastern North America was lush tropical rainforest, as evidenced by the very extensive deposits of coal (dead trees) in this region today. Over a long period of time, the continents have steadily moved across the globe like big pieces in a toddler’s jigsaw. Continents can be thought of as large rafts plying the oceans, occasionally bumping into each other, flooding, and splitting up due to internal processes in the Earth’s interior.
For some snapshots of Earth when it was a young ‘un, check out this site.